Trusted Sources

Google Knowledge Graph: Entity isReference Domains

Dataset: 62,202 isReference domains | entities

Proprietary analysis of Google's entity validation patterns across the Knowledge Graph.

The Google leak in May 2024 confirmed that Google explicitly associates people with their profile pages (isReference) and articles they have written (isAuthor).

⚠️ You Can't Use Just ANY Domain!

Out of 1,738,093 domains we monitor, only 62,202 qualify as isReference domains.

3.65%

Only 3.65% of domains earn isReference status from Google. Domain selection is critical.

Key concepts:

Wikipedia is NOT Required (or even your best bet)

Wikipedia: 6 million entities
Kalicube Pro: 71 million entities
Knowledge Graph: 50 billion entities

0.012%

Wikipedia covers only 0.012% of the Knowledge Graph. If your entity isn't in that 0.012%, you need to build a Knowledge Panel with ~30 isReference url instead.

📊 Kalicube's Entity Validation Dataset

1,738,093
Domains Checked Regularly
62,202
isReference Domains
3.58% qualify
23,295,240
URLs Monitored
74,097,202
Entities Tracked

💡 Even Small Niche Domains Have isReference Authority

Examples from our dataset (December 2025):

kalicube.com 21 entities
searchengineland.com 11 entities
jasonbarnard.com 86 entities
searchenginejournal.com 270 entities
entrepreneur.com 1,292 entities
forbes.com 2,823 entities

Your niche-specific domains may have similar authority in your category.

Top 100 isReference Domains for All Entity Types

Rank Domain Entity Count
1 wikipedia.org 455,831
2 instagram.com 134,661
3 x.com 83,241
4 linkedin.com 56,844
5 facebook.com 45,927
6 namu.wiki 37,689
7 youtube.com 36,936
8 google.com 34,527
9 legacy.com 27,086
10 twitter.com 23,489
11 britannica.com 22,137
12 reddit.com 17,553
13 dictionary.com 16,363
14 amazon.com 14,328
15 microsoft.com 13,524
16 fandom.com 12,116
17 crunchbase.com 9,759
18 wiktionary.org 9,680
19 tiktok.com 8,940
20 letterboxd.com 8,734
21 yahoo.com 7,857
22 rottentomatoes.com 7,651
23 apple.com 7,411
24 trustpilot.com 7,239
25 fifa.com 6,476
26 justwatch.com 6,387
27 quora.com 6,292
28 github.com 5,974
29 cambridge.org 5,588
30 shopee.co.id 5,410
31 wikiwand.com 5,188
32 espn.com 5,116
33 forbes.com 4,977
34 epicgames.com 4,922
35 history.com 4,901
36 hbomax.com 4,817
37 time.is 4,790
38 billboard.com 4,563
39 theguardian.com 4,429
40 pinterest.com 4,424
41 imdb.com 4,345
42 shopee.ph 4,280
43 dictionary.net 3,940
44 nhl.com 3,820
45 pornhub.com 3,758
46 independent.co.uk 3,688
47 bloomberg.com 3,456
48 indeed.com 3,405
49 bbc.com 3,396
50 google.co.il 3,357
51 spotify.com 3,329
52 genius.com 3,295
53 bing.com 3,270
54 uk.com 3,240
55 vocabulary.com 3,055
56 nih.gov 3,046
57 bbc.co.uk 3,009
58 xhamster.com 2,991
59 metacritic.com 2,928
60 soundcloud.com 2,925
61 eo-paris.fr 2,876
62 house.gov 2,855
63 nfl.com 2,844
64 temu.com 2,799
65 netflix.com 2,785
66 reuters.com 2,786
67 thesaurus.com 2,658
68 radiofrance.fr 2,608
69 goodreads.com 2,596
70 televisionacademy.com 2,567
71 amazon.co.uk 2,511
72 famousbirthdays.com 2,500
73 google.com.br 2,437
74 hotels.com 2,418
75 ebay.com 2,370
76 nintendo.com 2,326
77 amazon.fr 2,316
78 steampowered.com 2,310
79 the-independent.com 2,294
80 ca.gov 2,283
81 nytimes.com 2,255
82 rateyourmusic.com 2,252
83 playstation.com 2,193
84 gog.com 2,187
85 deel.com 2,185
86 gov.uk 2,157
87 zhihu.com 2,101
88 nba.com 2,093
89 one-line.com 2,096
90 inc.com 2,089
91 delta.com 2,089
92 itv.com 2,078
93 loc.gov 2,076
94 libri.de 2,055
95 aliexpress.com 2,044
96 stanford.edu 2,040
97 last.fm 2,034
98 lyrics.com 2,028
99 merriam-webster.com 2,016
100 search.google 2,006
101+ 62,102 additional niche-specific domains in full dataset covering 72,751,679 additional entities

Why This Data Matters

Google validates entity information through patterns of corroborating mentions across trusted domains. This list shows where Google recognizes all entity types - but here's the catch: entity authority is extremely niche-specific.

Entity Validation at Scale

Google's Knowledge Graph requires consistent entity recognition across validated domains.

  • Only 3.65% of domains (62202 out of 1738093) qualify as isReference
  • Brands typically need ~30 entity-validated url for a stable Knowledge Panel
  • Each niche has unique entity authority patterns
  • Generic "authority lists" miss 95%+ of niche-specific opportunities

⚠️ This Free List is Intentionally Limited

The top 100 domains shown above are dominated by massive generalist sites. For 99% of brands, the real opportunities lie in the niche-specific domains that only appear in our full platform dataset.

Recommended Reading:

🔐 Find YOUR Niche-Specific isReference Domains

We monitor 23M+ URLs across 1.7M domains to identify the exclusive 3.65% that qualify as isReference domains for 72M+ entities. The Kalicube Pro platform maps your competitive landscape and identifies your niche-specific opportunities in 15 minutes.

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